Spectrophotometer and spectrophotometry method

A spectrophotometer that measures concentrations of measurement target components contained in a test sample from an optical spectrum obtained by irradiating light onto the test sample, comprising:

• a concentration calculation unit that calculates concentrations of the measurement target components from the optical spectrum using a calibration curve;
• and
• a concentration correction unit that, using a predetermined temperature correction formula, corrects concentration changes in the measurement target components that accompany temperature differences between a temperature when the calibration curve is created and a temperature when the concentrations are measured.

A spectrophotometry method in which concentrations of measurement target components contained in a test sample are measured from an optical spectrum obtained by irradiating light onto the test sample, comprising:

• a concentration calculation step in which concentrations of the measurement target components are calculated from the optical spectrum using a calibration curve;
• and
• a concentration correction step in which concentration changes in the measurement target components that accompany temperature differences between a temperature when the calibration curve is created and a temperature when the concentrations are measured are corrected using a temperature correction formula that corresponds to a wavelength region or a wavenumber region in which concentrations of the measurement target components are being determined.

A non-transitory computer-readable recording medium storing a spectroscopic analysis program that is used in a spectrophotometer that measures concentrations of measurement target components contained in a test sample from an optical spectrum obtained by irradiating light onto the test sample, and that provides a computer with:

• a function of a concentration calculation unit that calculates concentrations of the measurement target components from the optical spectrum using a calibration curve;
• and
• a function of a concentration correction unit that, using a temperature correction formula that corresponds to a wavelength region or a wavenumber region in which concentrations of the measurement target components are being determined, corrects concentration changes in the measurement target components that accompany temperature differences between a temperature when the calibration curve is created and a temperature when the concentrations are measured.